I'm currently using a Whisper 40 on my 29 gallon FW tank. I've heard really good things about the Aqua Clear filters. So the 200/50 for 20-50 Gallon tanks would be the one right? I know I've seen posts about over filtering so want to be sure I don't need the bigger one.
Is the media that comes in the box what I should use or is there a better option?
I was going to run both filters on the tank at the same time to make sure I get bacteria growth in the new media. How long should this be done? Is there a better option for switching filters?

I'm currently using a Whisper 40 on my 29 gallon FW tank. I've heard really good things about the Aqua Clear filters. So the 200/50 for 20-50 Gallon tanks would be the one right? I know I've seen posts about over filtering so want to be sure I don't need the bigger one.
Is the media that comes in the box what I should use or is there a better option?
I was going to run both filters on the tank at the same time to make sure I get bacteria growth in the new media. How long should this be done? Is there a better option for switching filters?

Is the Wisper dying? If not I'd suggest just keeping both operational so you do have lots of filtration and if you ever need to setup a QT or whatever in a hurry, you'll be able to instant cycle it with either filter.

I have the AC50 and it's the perfect size for a 29g and I'd sugget you save the carbon pack for when you need it and run a wad of poly-fil in it's place. That stuff is excellent at polishing the water. Anything bigger that the 50 will create too much turbulence IMO.